Results 121 to 130 of about 21,693,337 (313)
High-frequency Ultrasound Detection Technique with Contrast Agents [PDF]
Sensors and Materials, 2019 Wu, Jian-Xing +5 more
openaire +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
A Scatter of Light from a Polarized World
The Astronomical JournalMany known exoplanets harbor clouds, which lead to degeneracies in spectroscopic models between particle composition and size. Polarimetry, however, provides independent assessment.
Sloane J. Wiktorowicz +3 more
doaj +1 more source
International Journal of Inflammation, 2012 Discriminating between focal chronic pancreatitis and pancreatic cancer is always a challenge in clinical medicine. Contrast-enhanced endoscopic ultrasound using Doppler techniques can uniquely reveal different vascularisation patterns in pancreatic ...
Michael Hocke, Christoph F. Dietrich
doaj +1 more source
Artificial molecular machines and motors—Design and control of nanoscale motion
FEBS Letters, EarlyView.Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley +1 more source
Linear Polarization Variations and Circular Polarization Are Common among Airless Bodies
The Planetary Science JournalUsing the POLISH2 polarimeter at the Lick Observatory Shane 3 m and Nickel 1 m telescopes, we discover rotation-phase-locked variations in linear polarization to be common among asteroids and a near-Earth object (NEO) in a clear, 383−720 nm bandpass ...
Sloane J. Wiktorowicz +2 more
doaj +1 more source
FEBS Letters, EarlyView.Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley +1 more source
The Astronomical JournalWe report the detection of a new brown dwarf companion to HIP 17453 A, a chemically peculiar A0V star located at a distance of 81 pc. HIP 17453 A was observed with high-resolution adaptive-optics imaging using the Near-Infrared Camera 2 on the Keck II ...
Marah Brinjikji +28 more
doaj +1 more source
The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers
Molecular Oncology, EarlyView.The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce +11 more
wiley +1 more source
Photometric Variability and Rotation of β Pictoris b from JWST NIRCam Coronagraphic Imaging
The Astronomical JournalWe report the detection of photometric variability in the directly imaged super-Jupiter β Pictoris b ( β Pic b). Using JWST NIRCam dual-band coronagraphic imaging, we conducted a 16 hr continuous photometric monitoring campaign in the F210M and F410M ...
Yifan Zhou +30 more
doaj +1 more source